US2447300A

US2447300A - Grasp device

Info

Publication number: US2447300A
Application number: US641441A
Authority: US
Inventors: William A Williams
Original assignee: AMERICAN PULLEY CO
Current assignee: AMERICAN PULLEY Co
Priority date: 1946-01-16
Filing date: 1946-01-16
Publication date: 1948-08-17
Anticipated expiration: 1965-08-17

Description

Aug. 17, 1948.

W. A. WILLIAMS GRASP DEVICE 3 Sheets-Sheet 1 Filed Jan. 16, 1946 INVEIYTQR: M/lzamA- Mlfiams,

ATTORNEYS.

WW I TNESSiSah 1948- w. A. WILLIAMS 2,447,300

GRASP DEVICE Filed Jan. 16, 1946 SASheets-Sheet 3 wmvsssas V INVEENTOR:

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Y y i I 0 ATTORNEYS.

Patented Aug. 17, 1948 OFFICE;

GRASP DEVICE William A. Williams, Philadelphia, 1a., smite to The American Pulley Company, Philadelphia, Page corporation ofl'ennsylvania A Application Jimm e, 1946, Serial No. 641,441

- .l'iff This invention relates to grasp devices useful more especially in connection with apparatus such as hand trucks-and powered transporting elevator trucks, in'handling container drums and the like; g

"The chief aim of my invention is to provide a device of the kind referred to which is of simple and inexpensive construction, and. capable, as the truck with which it is associated is maneuvered into position to receive an upright drum, of automatically graspingv the laterally-projecting top flange or chime of such drum and thereby pick up vtheidrum and thereafter securely hold it on the truck while it is being transported.

In connection with a clamp device having the above attributes and intended for use with a hand truck, it is a further aim of my invention toprovide for its adjustment longitudinally of the truck so that the truck may be adapted for handling drums of different heights.

Other objects and attendant advantages will appear from the following detailed description of theattached drawings, wherein Fig. 1 is a view in front elevation of a hand truck with an associated grasp device conveniently embodying my invention.

Fig. 2 is avertical section taken as indicated by the angled arrows IIH in Fig. 1 showing how the hand truck is maneuvered into position to pick up an upright container drum with the aid of m improved grasp device. i

Figs. 3 and 4 are detail sections drawn to a larger scale and taken as respectively indicated by thearrows III-III and IV-IV in Figs. 1 and 2; and. I

Fig. 5 is a view in side elevation of a powered elevating and transporting truck likewise provided with a grasp device of my invention.

Referring first more particularly to Figs. 1 and 2 of these illustrations, the hand truck there shown is generally of well known construction in that it has a frame with hollow side bars III ,which are joined at their opposite ends by cross members I and l 2, the latter of these cross members being concaved to approximately conform to the curvature of drums, such as the one indicated at D in Fig. 2, to be transported. The wheels I3 of the truck are rotatable about the cylindric ends of an axle I4 lodged in a transverse channel bar l5 which is secured to bracket elements ||i pendent from the side bars ll adjacent the nose end of the truck. At the'opposite end, the truck has the usual handles l1 whereof the shanks are riveted fast within the hollows of the side bars III. In accordance with my invention 4 Claims. (01. 214- 54) the truck frame is provided for a purpose presently explained, with a central longitudinal member l3 of channel section whereof the opposite ends are fixedly connected. respectively to the cross member l1 and to the axle channel l5.

The drum D which it is desired to transport is of a type having a cylindric body B (Fig; 3) with a substantially-square section outwardly-project ing flange or chime b, peripherally of its top. and a cover C with an upwardly projecting circumferential ridge embossment 0 adapted to fit down over said chime, the cover being held in place by ,a clamp ring R.

The grasp device with which the present invention is more especially concerned is comprehensively designated l3, and as shown, comprises a stop member 20 and a cooperative latch element 2| As seen to the best advantage in Figs. 3 and 4 the stop member consists of an angle piece 22 whereof the horizontal flange is concaved as at 23 to conform to the curvature ofthe drum body and to serve as a ledge for engaging beneath the chime b of said drum; and a channel piece 25 which is welded orotherwise rigidly attached to the back of said angular piece at the center and slidingly engages over the central longitudinal I8 ,of the truck frame. In order that the device may be adjusted along the longitudinal l8 to suit the height of the drum D, I have provided it with a set screw 26 which is selectively engageable with apertures 21 serially arranged in said longitudinal. I v

The latch element 2| is in the form of a yoke with side arms 28 connected at their rear ends, by a stud rivet 29. Fixed in ears 30 pendent fromthe side arms 28 intermediate their ends are headed pivot studs 3| whereof the shanks engage aligned holes respectively in opposite sides of the portion 25 of the stop member 20. At the front ends of its side arms 28 the latch element is provided with hoolrs 32 for engaging the circumferential ridge embossment c of the cover C rearward of the chime b shown in Fig. 3, said hooks being beveled as shown for capacity to ride over said embossment in a manner presently explained. A coiled spring 33 in tension between the rivet 23 and an anchorage lug 34 welded fast within the sleeve portion 25 of the stop member 20, serves to yieldingly maintain the element 2| in latching position.

In use, the hand truck is brought up to the upright drum D and swung up about its toe end to 3 the drum, and overriding of the cover embossment c by the. beveled hook ends of the spring-biased latch element 2| into final latching position. The grasp device thereafter maintains a firm hold on the drum D as the truck is swung back to wheeling position, with the drum supported by the side bars l and cross member I! ofthe truck frame. In unloading the truck after the drum has been transported to the desired location, it is swung up to vertical position likewise as in Fig. 2 to deposit the drum upright. With this accomplished, the rearwardly-proiecting portion of the latch element 2| is depressed in opposition to the spring 33 and its hook ends 32 thereby disengaged from the chime of the drum, and the truck thereupon withdrawn. 'I'o adapt the truck for manipulation of drums of other heights, the grasp device is simply adjusted as may be required along the central longitudinal ll of the truck frame andthereafter fixed by engaging the set screw 26 with the proper hole .21 in said longitudinal.

At Fig. 5, the grasp device is secured with capacity for adjustment to a post Illa on the elevator 40 of a powered four wheel elevating and transporting truck ll which has a platform at '42 for an operator. Through suitable mechanism (not shown) controllable by means of a hand lever at 43, the elevator 40 can be raised or lowered in a well known manner. In the use of the truck of Fig. 5, the elevator 46 is lowered to place the grasp device [9 at the proper height for engagement with the chime of the drum which is to be picked up. Thereupon the truck is advanced toward the drum to efiect automatic engagement of the'grasp device with the drum in the same manner as described hereinbefore in connection with the hand truck. The elevator 4|! is next actuated to lift the drum as shown in Fig. 5, and the truck operated to transport the drum to the desired location. .Then the elevator may be lowered to deposit the drum on the floor, or further raised if the drum is to be stacked upon another previously transported. After deposit of the drum in either case, the latch element 2| of the grasp device is tripped for detachment from such drum. To facilitate this, I have in this instance connected the latch element 2| by a pull cord 45 to another hand lever 46 convenient of access to the truck operator at the platform 42.

flanges or chimes circumferentially of their tops,

said device comprising a stop member adapted to be affixed to a vertical part of the truck and-having a ledge for engaging beneath the chime of a drum of the aforesaid type in upright position; and anassociated relatively movable latch element with a hook having a beveled cam end for capacity to ride over the chime and automatically engage it at-the back as the truck is brought to the drum from the side to pick it up.

-2. A grasp device characterized as in claiml, wherein the latch element is pivotally connected to the stop member, and wherein a biasing spring is arranged to urge the hook of said element toward the ledge of the stop member.

3. A grasp device characterized as in claim 1, wherein the stop member is in the form of a slide which is adjustable up and down on the vertical part of thetruck for adaptation of the truck to handle drums of different heights. 7

4. A grasp device for use in connection with a powered transporting truck having an elevator and a seat for an operator, in picking up container drums having outwardly projecting flanges or chimes circumferentially of their tops, said device comprising a stop member adapted to be affixed to the elevator and having a ledge for engaging beneath the chime of a drum of the aforesaid type in upright position; an associated relatively movable latch element with a hook having a beveled cam end for capacity to ride over the chime and automatically engage it at the back as the truck is brought up to the drum from the side to pick it up; and control means accessible from the station of the operator on the truck for actuating the latch member to release the drum after it has been transported to the desired location.

WILLIAM A. WILLIAMS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,929,447 Remde Oct. 10, 1933 2,160,041 Sooter May 30, 1939 2,196,822 Bissell Apr. 9, 1940 2,250,475 Ernst July 29, 1941 2,272,447 Traxel Feb. 10, 1942 2,304,649 McDaniels Dec. 8, 1942 2,319,456 Hazen May 18, 1943 2,346,649 Bilek et al. Apr. 18, 1944 2,360,858 Ernst Oct. 24, 1944 2,364,493 Ulinski Dec. 5, 1944